Ozzy Osbourne: What if his mansion is sold with him buried in the garden?

Following Ozzy Osbourne's funeral at his mansion in Buckinghamshire, the question arises: what will happen if his estate is ever sold?
Ozzy Osbourne passed away on July 22nd at the age of 76, after a long battle with health issues and a few weeks after performing his last concert with Black Sabbath.
More information can be found at www.gazzetta.gr and www.protothema.gr.